Ball-bearing shears.



D. A. MIGKLESON. BALL BEARING SHEARS. APPLIOATIWON FILED NOV.13,1909.

951 ,539 I Y Patented Mar. 8, 1910.

Dbl A. MICKLESON, J5 CAEBONATE, UTAH.

BALL-BEARING To all whom it may concern:

Be it known that I, Don A. MIGKLESON,

" a citizen of the United States, residing at Carbonate, in the county 0; Utah and State. of Utah,have invented oer ain new and figures of reference marked thereon,

which form a partof this specification.

This invention relates to new and useful improvements in shears-and the object in View is to produce a simple and eflicient device of this nature in which anti-friction balls are disposed intermediate the blades and so arranged that they will cause the cuttingedges of the blades to shear at all times and adapted to compensate for wear upon the pivotal pin connecting the blades.

The invention is illustrated in the accompanying drawings, in which Figure 1 is a perspective View of shears made in accordance with my invention. Fig. 2 is a cross sectional View on line 2-2 of Fig. 1, and Fig. 3 is a cross sectional view on line 3-3 of Fig. 1.

Reference now being had to the details of the drawings by letter, A and B designate the two' blades of the shears and O a pivotal pin or screw upon which the blades are mounted. The inner face of the Specification of Letters Patent.

13, 1909. Serial N0, 527,851.

Patented Mar. ti,

shank portion of said blade A is recessed, out .as at D. and is adapted to contain a series of anti-friction'balls E. A yielding dished plate F is mounted in said recess and is provided with a resilient finger it at each end, and G designates set screws mounted in threaded apertures leading into said recess and adapted to hear one against each of said resilient fingers for the purpose of holding the dished plate yieldingly against the anti friction balls to take up all wear caused by .the blades turning upon their pivotal pin or screw and at the same time causing the cutting edges of the blades to shear; By means of the setrscrews, the

tension between the same and the plate bearing against the balls may be regulated, as will be readily understood.

What I claim to be new is I In combination with a pair of shears, one ofthe blades being recessed upon its inner face, anti-friction balls mounted in said recess, a plate bearing against said balls, said plate having resilient finger set screws mounted in threaded apertures in one of the blades andbearing against said yielding fingers.

In testimony whereof I hereunto afiix my signature in the presence of two witnesses.

I Donn. MicKLnsoN.

Witnesses;

W. S. MECHAM, H. C. Jonnson.

l ll 

